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How many different possible combinations of the four different nitrogen bases taken three at a time?
Four of them.
How many different three member committees can be formed from a group of twenty-five people?
There are 2300 possible combinations.
How many different combinations are possible if a coin is tossed twice and a number cube is tossed once?
18 different combinations. When a coin is tossed twice there are four possible outcomes, (H,H), (H,T), (T,H) and (T,T) considering the order in which they appear (first or second). But if we are talking of combinations of the two individual events, then the order in which they come out is not considered. So for this case the number of combinations is three: (H,H), (H,T) and (T,T). For the case of tossing a die once there are six possible events. The number of different combinations when tossing a coin twice and a die once is: 3x6 = 18 different combinations.
How many different three digit combinations can be made from numbers 0 1 2 3 4 5 6 7 8 9?
There are 720 combinations if you use each of the digits only once per combination.
If you flip a coin 2 times how many possible outcomes are there How many combinations?
Four outcomes, three combinations.
